package net.minecraft.block;

import java.util.Random;
import net.minecraft.block.state.IBlockState;
import net.minecraft.init.Blocks;
import net.minecraft.util.BlockPos;
import net.minecraft.world.World;
import net.minecraft.world.gen.feature.WorldGenBigMushroom;
import net.minecraft.world.gen.feature.WorldGenerator;

public class BlockMushroom extends BlockBush implements IGrowable {
	protected BlockMushroom() {
		float f = 0.2F;
		this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, f * 2.0F, 0.5F + f);
		this.setTickRandomly(true);
	}

	public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand) {
		if (rand.nextInt(25) == 0) {
			int i = 5;
			int j = 4;

			for (BlockPos blockpos : BlockPos.getAllInBoxMutable(pos.add(-4, -1, -4), pos.add(4, 1, 4))) {
				if (worldIn.getBlockState(blockpos).getBlock() == this) {
					--i;

					if (i <= 0) {
						return;
					}
				}
			}

			BlockPos blockpos1 = pos.add(rand.nextInt(3) - 1, rand.nextInt(2) - rand.nextInt(2), rand.nextInt(3) - 1);

			for (int k = 0; k < 4; ++k) {
				if (worldIn.isAirBlock(blockpos1) && this.canBlockStay(worldIn, blockpos1, this.getDefaultState())) {
					pos = blockpos1;
				}

				blockpos1 = pos.add(rand.nextInt(3) - 1, rand.nextInt(2) - rand.nextInt(2), rand.nextInt(3) - 1);
			}

			if (worldIn.isAirBlock(blockpos1) && this.canBlockStay(worldIn, blockpos1, this.getDefaultState())) {
				worldIn.setBlockState(blockpos1, this.getDefaultState(), 2);
			}
		}
	}

	public boolean canPlaceBlockAt(World worldIn, BlockPos pos) {
		return super.canPlaceBlockAt(worldIn, pos) && this.canBlockStay(worldIn, pos, this.getDefaultState());
	}

	/**
	 * is the block grass, dirt or farmland
	 */
	protected boolean canPlaceBlockOn(Block ground) {
		return ground.isFullBlock();
	}

	public boolean canBlockStay(World worldIn, BlockPos pos, IBlockState state) {
		if (pos.getY() >= 0 && pos.getY() < 256) {
			IBlockState iblockstate = worldIn.getBlockState(pos.down());
			return iblockstate.getBlock() == Blocks.mycelium ? true
					: (iblockstate.getBlock() == Blocks.dirt
							&& iblockstate.getValue(BlockDirt.VARIANT) == BlockDirt.DirtType.PODZOL ? true
									: worldIn.getLight(pos) < 13 && this.canPlaceBlockOn(iblockstate.getBlock()));
		} else {
			return false;
		}
	}

	public boolean generateBigMushroom(World worldIn, BlockPos pos, IBlockState state, Random rand) {
		worldIn.setBlockToAir(pos);
		WorldGenerator worldgenerator = null;

		if (this == Blocks.brown_mushroom) {
			worldgenerator = new WorldGenBigMushroom(Blocks.brown_mushroom_block);
		} else if (this == Blocks.red_mushroom) {
			worldgenerator = new WorldGenBigMushroom(Blocks.red_mushroom_block);
		}

		if (worldgenerator != null && worldgenerator.generate(worldIn, rand, pos)) {
			return true;
		} else {
			worldIn.setBlockState(pos, state, 3);
			return false;
		}
	}

	/**
	 * Whether this IGrowable can grow
	 */
	public boolean canGrow(World worldIn, BlockPos pos, IBlockState state, boolean isClient) {
		return true;
	}

	public boolean canUseBonemeal(World worldIn, Random rand, BlockPos pos, IBlockState state) {
		return (double) rand.nextFloat() < 0.4D;
	}

	public void grow(World worldIn, Random rand, BlockPos pos, IBlockState state) {
		this.generateBigMushroom(worldIn, pos, state, rand);
	}
}
